Pattern for casting finger-rings.



I F. H. CURL.

PATTERN FOR CASTING FINGER. RINGS.

APPLICATION FILED 0(JT.31,1910.

996,978. v Patented. Juiy 4, 1915..

2 BHEETSSHEET 1.

F. CURL PATTERN POE CASTING FINGER. RINGF. 'APPLIOATION HLE'I) 00131, 1910.

996,978., Zatentefi 4, m1.

2 SHEETS-SHEET 2.

FRED I-I. CURL, or DES MOINES, rows.

IEA'J.TEENv FOR CASTING FINGER-RINGS.

Specification of Letters Patent.

Application filed October 31, 1910. Serial No. 590,019.

To all whom it may concern:

Be it known that I, FRED H. CUnL,-a citizen of the United States, residing at Des Moines, in the county of Polk and State of Iowa, have invented a certain new and useful Pattern for Casting I inger-Rings, of

which the following is a specification.

The object of my invention is to provide a pattern of simple, durable and inexpensive construction that may be made of any suitable inexpensive metal and furnished in sets of various sizes to jewelers, whereby the jeweler having the pattern may, by the use of a simple and inexpensive mold, cast finger rings of precious metal quickly and easily at a minimum of expense.

My invention consists in certain details, in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in, the accompanying drawings, in which:

Figure 1 shows a side elevation of a pattern embodying my invention. Fig. 2 shows a vertical, central, sectional view of same. Fig. 3 shows a detail, plan view of a multi ple gate that may be used in connection with my improved ring pattern. F ig. 4 shows a plan view of a top mold member having an impression therein made of my improved pattern, Fig. 5 shows a similar view of the lower mold member having my improved pattern therein Fig. 6 shows a side elevation of the core member of my improved pattern. Fig. 7 shows a side elevation of the ring member of my improved pattern. and- Fig. 8 shows a plan view of a mold adapted to receive a number of my improved patterns connected with a multiple gate,

one half of the upper mold member being removed and the pattern in the lower mold member beneath it being illustrated by dotted lines.

Referring to the accompanying drawings, I have used the reference numeral 10 to indicate. the .body portion of the ring member of my improved pattern. At one point on the circumference of the-body portion is a series of prongs ll of the kind and shape now in common use for the purpose of holdiim precious stones. At the side of the body portion 10 opposite from the prongs 11, l preferably provide two small o 'ienings such as indicated by dotted lines in Fig. 1, for the pur ose of receiving a gate pattern, member 12 which is provided with lugs 13 to enter said opening.

PatenteibJuly 4, 1.

In connection with the ring pattern memher I employ a core member which con'1'-* prises a body portion 14 having a central cone-shaped portion 15 designed to enter the interior of the space between the prongs on the ring pattern member, and also provided with a series of recesses 16 designed to receive'said prong/members on the ring per tion. Extended through the body portion 14 is a guide pin 17 having one short and one long end proiecting'beyond the body portion.

The mold members with which my improved pattern is employed comprise a nuinber of upper and. lower mold membersfthe upper member being indicated by theinumoral 18, as shown in Fig. 4, and the lower by the numeral 19, as shown in Fig. 5.}

These mold members'may consist .of two pieces of cuttlefish bone or they may be made of ordinary mold frames'employed in co'nncction with molders sand or other suitable material. I11 order to provide for holding the two mold members in coinciding positions, I proyide a number of L-shaped metal guides 20 partially embedded in oneof the mold members 18 and designed to enter corresponding depressions made in the other mold member as shown at 21 in Fig. In practical operation with this form of my invention I connect the ring pattern, the

core pattern and the gate pattern, as shown in Fig. 5, and then place them in upon the mold member 19 and then place'the mold member 18 on to of it and force the two mold members firmly together. This causes the material of the cuttl-elishbone to b depressed at the points where the pattern members engage it so that=the adjacent sur faces of the mold members may' come in com tact with each other. I then remove the 1 complete pattern and finally replace the core pattern thus leavii'igia mold cavity in the imaterial consist-ingot the gate and of the ring member.

The notches 1610f the core position member are so arranged that the metal-will flow into them and produce perilcctly' formed prongs for the ring being molded The melted precious metal is then poured into the moldin. the ordinary way and small grooves 22 are provided at the ends of the notches 16 through which the air bubbles may. escape at'the ends of the prongs.

In order to provide for casting a number of rings at the same time I provide mold of the kind illustrated in Fig/ 8 co sisting of a lower member 23 and an up c r mold member 24 and I place therein number of patterns of the kind illustrated in Figs. 1 and 2 and I connect all of these patterns by means of a multiple gate pattern as shown in Fig. 3. This patter" is provided with guide pins 26 for detachq/le connection with the ring pattern memfirs in the Silll'llQ manner as the pins 13 ,"on th /gate pattern 12 as shown in Fig. 2.

By the use of my impro ,ed pattern a ring manufacturer lnayj have %n equipment for casting rings of variou"sizes and shapes, which equipment is con )aratively inexpen-, sive and of few /parts hat cnpy a small amount space] F0 instance, the equipment required ,for ordinary purposes may consist of a single gate pattern member, a

nu her of ring pattern members of all the var ous sizes otring odies'and also tl1e vari-- ous sizes'of prongs .for receiving the precious stones and then they need only have a number of core 11 mbers corresponding to' the sizes of the pr ng members of the rings so that, with an quipment consisting of a few core member a greater number of ring members and a ngle gate-member, a ring manufacturer i provided with an equipment by which 0 can readily, quickly and easily make ri gs of all of the standard l sizes of body ortions and prong members that may" be re uired, and as all of these pattern members ln'ay be made of cheap metal it is obvious that a complete equipment may .be provided 1 at aminimum of expense.

Furthermore by the use of my improved patter/us an operator may readily and easily prepare a mold and complete the casting operation without any other equipment in addit on to my improved patterns than is nee essary to melt gold or other precious metal I ,sclann as my invention:

1. An improved pattern for casting finger rings, comprising a ring pattern member consisting of a body portion, and a series of prongs at one point thereon for forming a stone setting, and a core member eon'uprising a body portion, a cone-shaped projection de signed to enter between the prongs of the ring member and a series of notches designed to receive the prongs of the ring member, the said prongs and depressions eing accurately fitted together so that when pressed into the material in which the cast.-

ing is done they will form a substantially cylindrical mold cavity having a smooth exterior. i

2. An improved pattern for casting finger rings, comprising a ring pattern member consisting of a body portion and a series of prongs at one point thereon for forming a stone setting, and a core member comprising a body portion, a cone-shaped projection designed to enter between the prongs of the ring member, and a series of notches designed to receive the prongs of the ring member, the said prongs and depressions being accurately fitted together so-that when pressed into the material in which the casting is done they will form a substantially cylindrical mold cavity having a smooth exterior, and a gate mold member detachably connected with the ring mold member.

3. A pattern for finger ring castings, comprising a series of ring pattern members, each comprising a body portion and a series of prongs at one side thereof to form a stone setting, each also being provided with two openings at' a point opposite the setting, a

core member for each ring member comprising a body portion, a cone-shaped projection designed to enter the ring member and a series of notches surrounding the coneshaped projection and designed to receive the prongs and to accurately fit them, and a multiple gate pattern member having a series of arms, each provided with two pins to enter the corresponding openings of one of the ring members, for the purposes stated.

4. An improved pattern for finger ring castings, comprising a pattern member having a circular body portion, a series of prongs to form a stone setting, said prongs being arranged around a substantially coneshaped space between them, a core member comprising a body portion, a substantially cone-shaped projection designed to enter between the prongs of the ring member, and a "series of notches surrounding the cone-- FRED it. com;

W'itnesses:

MARY VVALLACE, A. G. HAGUE, 

